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Phys. Rev. Lett. 86, 2996–2999 (2001)

Multiply Charged Metal Cluster Anions

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Constantine Yannouleas1, Uzi Landman1, Alexander Herlert2, and Lutz Schweikhard2
1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430
2Institut für Physik, Johannes-Gutenberg Universität, D-55099 Mainz, Germany

Received 5 December 2000; published in the issue dated 2 April 2001

Formation and stability patterns of silver dianionic and gold trianionic clusters are investigated with Penning-trap experiments and a shell-correction method including shape deformations. The theoretical predictions pertaining to the appearance sizes and electronic shell effects are in remarkable agreement with the experiments. Decay of the multiply anionic clusters occurs predominantly by electron tunneling through a Coulomb barrier rather than via fission, leading to appearance sizes unrelated to those of multiply cationic clusters.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.2996
DOI:
10.1103/PhysRevLett.86.2996
PACS:
36.40.Wa, 36.40.Cg, 36.40.Qv